There are two types of search engines: Search Engine
Directories and Search Engine Spiders. Each search engine
(regardless of whether it is a spider or a directory) uses
unique criteria for "ranking" websites.

Search Engine Directories

Search Engine Directories rely on humans to gauge web page
relevancy and search engine placement. Human editors review
each website and rank them according to a set of guidelines
such as website content, website functionality, and design
professionalism. Yahoo! and the Open Directory Project, DMOZ
are the most popular Directory Driven Search Engines.

Spiders / Crawlers / Robots

Spider driven search engines use "robots" to spider websites
across the Internet. Robots "crawl" each website and "score"
pages based on relevancy. Some engines score the index page
while others score individual web pages. A website's score
or placement within a spider driven search engine is derived
from hundreds of variables such as, link popularity, click
popularity, keyword density, website themes and more.
Google.com is the most popular spider driven search engine.

Earning Top
10 Search Engine Placement is complex and highly competitive
for three reasons:

Studies have proven that top placement in search engines,
among other forms of online marketing; provide a more
favorable return on investment compared to traditional forms
of advertising such as, send mail, radio commercials and
television. Search engine optimization is the ONLY fool
proof method to earning guaranteed Top 10 search engine
placement.

Why Search Engine Optimization?

Studies have proven that top placement in search engines,
among other forms of online marketing; provide a more
favorable return on investment compared to traditional forms
of advertising such as, send mail, radio commercials and
television. Search engine optimization is the ONLY fool
proof method to earning guaranteed Top 10 search engine
placement.